Which of the following is NOT measured in a pulmonary functioning test (PFT)?

In a pulmonary functioning test (PFT), the primary focus is on assessing the functionality of the lungs and the ability to exchange gases. The various components measured in PFTs include how much air one can inhale and exhale and how effectively that air can move in and out of the lungs during respiration.

Muscle strength, particularly as it relates to overall physical performance, is not a direct measure of lung function. Instead, PFTs specifically evaluate lung volumes (such as inspiratory reserve and forced vital capacity) and airflow rates (like expiratory flow). These factors reflect the health of the respiratory system rather than the strength of the muscles involved in breathing or other physical activities.

Thus, while inspiratory reserve, forced vital capacity, and expiratory flow are directly tied to lung functioning and are measured during PFTs, muscle strength does not fall within the scope of what these tests aim to analyze.